For SNP rs10759243 in the KLF4 gene, the genotype “C/A” increased clinic stage (UICC) III and IV breast cancer risk by1.85-fold (OR = 1.85; 95% CI, 1.14-3.00; p = 0.037) in the codominant model and “C/A-A/A” genotype in the dominant model (OR = 1.79; 95% CI, 1.12-2.85; p = 0.012) (Supplementary Table S10). Here, KLF4 is linked to breast cancer.